KR20130078879A - Force discharging device for battery - Google Patents

Abstract

PURPOSE: A device for forcibly discharging a battery is provided to maximize recharging efficiency by forcibly discharging residual current in the battery. CONSTITUTION: A device for forcibly discharging a battery comprises a main body; a connection terminal part (200) which is connected to the external battery; a discharge resistance part (300) which discharges the current of the battery through heat; a current measuring part (500) measuring residual current; an electromagnetic contactor (600) which connects or blocks the discharge resistance part; a first switch (70) which turns on and off the voltage measuring part and electromagnetic contactor; a second switch which turns on and off the current measuring part; and a start switch (730) which turns on and off the electromagnetic contactor in a state that the first switch is turned on.

Description

Rechargeable Battery Discharge Device {FORCE DISCHARGING DEVICE FOR BATTERY}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rechargeable battery forced discharge device, and more particularly, to a rechargeable battery forced discharge device for maximizing recharge efficiency by forcibly discharging a current remaining in the rechargeable battery and then recharging the battery after recharging.

In general, rechargeable batteries are widely used in small appliances such as toys, model airplanes or cameras, and in business devices such as electric forklifts.

In order to recharge the rechargeable battery after use, it is necessary to discharge the current value and the voltage value charged in the rechargeable battery to a predetermined value, and then recharge the battery to improve the charging efficiency and to efficiently use the rechargeable battery.

As described above, when the rechargeable battery is discharged to a predetermined value and then recharged, not only can the charging efficiency be improved, but also the reference voltage can be efficiently used during use.

If the battery is recharged without being discharged to a certain value, charging is not performed quickly, and the charging efficiency is lowered. There was a problem that can not function as a rechargeable battery.

One example for solving this problem is disclosed in Korean Utility Model Model Publication No. 20-0139788.

1 is a block diagram of a conventional rechargeable battery discharge device.

As shown in FIG. 1, the rechargeable battery discharge apparatus includes a reference voltage generating means 5, discharge end voltage setting means 6 for setting a discharge end voltage, and a comparator 7 for comparing the reference voltage and the discharge end voltage. ), An OP amplifier 9 for amplifying the discharge end voltage output from the comparator, discharge current adjusting means 11 for receiving an output signal output from the OP amplifier 9 and adjusting a discharge current; And a multi-arling tone amplifying means 13 for discharging the charge voltage of Ba) at high amplification by the discharge resistance, and discharge display means for displaying the discharge of the charge voltage of the rechargeable battery Ba at the discharge resistance.

However, such a conventional rechargeable battery discharge device starts discharging as soon as the rechargeable battery is connected, and is operated by the current and voltage remaining in the rechargeable battery. There is a problem that can not discharge the value to a certain value.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a rechargeable battery forced discharge device capable of easily forcibly discharging a current value and a voltage value of a discharged rechargeable battery to a certain value by allowing all devices to operate by receiving external power. The purpose is.

In order to achieve the above object, the rechargeable battery forced discharge device of the present invention includes a main body; A connection terminal unit mounted to the main body and connected to an external rechargeable battery; A discharge resistor unit configured to discharge current by converting a current of the rechargeable battery connected to the connection terminal unit into heat; A voltage measuring unit measuring a voltage of the rechargeable battery connected to the connection terminal unit; A current measuring unit supplied from the rechargeable battery and measuring a current remaining after being discharged from the discharge resistor unit; Electromagnetic contactor for connecting or disconnecting the connection terminal unit and the discharge resistor unit Magnetic Contactor); A first switch to turn on / off the voltage measuring unit and the magnetic contactor by an external power source; A second switch to turn on / off the current measuring unit by an external power source; A start switch to turn on / off the magnetic contactor when the first switch is turned on; When the first switch and the start switch is in the on state, the magnetic contactor is connected to the connection terminal portion and the discharge resistor portion, the current remaining in the rechargeable battery flows to the discharge resistor portion and is forcibly discharged. do.

The discharge resistor unit, the heat dissipation tube formed in a U shape; A plurality of heat sinks formed in a disc shape on an outer circumference of the heat sink; The heat sink is characterized in that for dissipating the current of the rechargeable battery converted into heat to the outside.

A plurality of discharge resistors, and a selection switch to turn on / off each of the discharge resistors selectively; And further comprising:

The heat dissipation tube at the rear of the discharge resistor And a cooling fan cooling the heat sink. It further comprises, wherein the cooling fan is operated while the first switch and the start switch is turned on, when viewed from above, the U-shaped heat dissipation tube is connected by both ends of the virtual line by the cooling fan It is characterized in that it is disposed inclined with respect to the movement direction of the wind.

A timer operating when the second switch is turned on; Wherein, the timer, the control unit for calculating the discharge time of the rechargeable battery by the current value measured by the current measuring unit and: the time remaining until the rechargeable battery is discharged by the value calculated by the controller A display unit for displaying; An alarm to display the battery when the discharge of the rechargeable battery is completed; Wherein, the control unit is characterized in that by controlling the alarm to display the outside when the current value measured by the current measuring unit reaches a predetermined predetermined value.

According to the rechargeable battery forced discharge device of the present invention as described above has the following advantages.

When the first switch and the start switch are in an on state, the magnetic contactor connects the connection terminal part and the discharge resistor to force the electric current remaining in the rechargeable battery to flow through the discharge resistor.

There is an effect of cooling the heat dissipation tube by better dissipating the current of the rechargeable battery converted into heat by the plurality of heat dissipation plates formed in a disc shape to the outside.

And further comprising a selection switch for turning on / off each of the discharge resistors selectively so that the discharge resistors can be discharged by selecting the discharge resistors according to the capacity of the rechargeable battery. It is effective to prevent.

By mounting a cooling fan for cooling the heat of the discharge resistor portion, there is an effect to quickly cool the discharge resistor portion is raised in temperature.

In addition, when viewed from above, the U-shaped heat dissipation tube is arranged inclined with respect to the movement direction of the wind by the cooling fan, the imaginary line connecting both ends, the discharge resistance portion of the wind generated in the cooling fan is U-shaped It has an effect of efficiently cooling the heat generated by better contact with.

The timer has an effect of knowing in advance the time remaining until the rechargeable battery is discharged.

In addition, after the discharge of the rechargeable battery by the alarm has an effect of informing the user.

1 is a block diagram of a conventional rechargeable battery discharge device.
Figure 2 is a circuit diagram showing the configuration of the rechargeable battery forced discharge device of the present invention.
Figure 3 is a perspective view showing the structure of the main body of the rechargeable battery forced discharge device of the present invention.
Figure 4 is a front view showing the front structure of the main body of the rechargeable battery forced discharge device of the present invention.
Figure 5 is a perspective view showing the structure of the discharge resistor of the rechargeable battery forcing discharge device of the present invention.
FIG. 6 is a cross-sectional view taken from AA of FIG. 3; FIG.

Figure 2 is a circuit diagram showing the configuration of the rechargeable battery forced discharge device of the present invention, Figure 3 is a perspective view showing the structure of the main body of the rechargeable battery forced discharge device of the present invention, Figure 4 shows a front structure of the main body of the rechargeable battery forced discharge device of the present invention. Fig. 5 is a perspective view showing the structure of the discharge resistance portion of the rechargeable battery forced discharge device of the present invention, and Fig. 6 is a sectional view taken from AA of Fig. 3.

As shown in FIGS. 2 to 6, the present invention, the rechargeable battery forced discharge device, the main body 100, the connection terminal 200, the discharge resistor 300, the selection switch 330, the voltage measuring unit 400, The current measuring unit 500, the magnetic contactor 600, the first switch 710, the second switch 720, the start switch 730, the cooling fan 800, and the timer 900 are included.

The main body 100 has a rectangular parallelepiped shape as shown in FIG. 3.

As shown in FIGS. 3, 4 and 6, the connection terminal part 200 is installed at the rear of the main body 100, and the discharge resistance part 300, the voltage measuring part 400, and The current measuring unit 500, the magnetic contactor 600, the cooling fan 800, and the timer 900 are mounted.

In addition, a through hole 110 is formed at the front and rear of the main body 100 so that air is supplied to the cooling fan 800 mounted therein so that the air flows out from the front of the main body 100.

In addition, the liquid crystal unit 120 which displays the current and voltage measured by the voltage measuring unit 400 and the current measuring unit 500 as shown in FIGS. 3 and 4 on the front upper portion of the main body 100. The first switch 710, the second switch 720, the start switch 730, and the selection switch 330 are mounted to be turned on / off by a user.

And the lower portion of the main body 100 is equipped with a wheel 130 to facilitate movement.

The connection terminal 200 is mounted to the rear of the main body 100 as shown in FIG.

The connection terminal part 200 is a part for connecting with the rechargeable battery B for discharging the current remaining therein.

Since the rechargeable battery B is a DC current, the connection terminal unit 200 connects the positive electrode and the negative electrode.

As shown in FIG. 1, the discharge resistor unit 300 discharges the current of the rechargeable battery B connected to the connection terminal 200 into heat and dissipates to the outside to discharge the rechargeable battery B.

The discharge resistor 300 is composed of a heat dissipation tube 310 and a heat dissipation plate 320 as shown in FIG.

The heat dissipation tube 310 is formed in a U shape.

The heat dissipation tube 310 is a passage that is converted into heat while the current remaining in the rechargeable battery (B) flows.

That is, the heat dissipation tube 310 is a portion that consumes current by changing the current flowing into heat as current flows like a known heating wire (nichrome wire).

The heat dissipation plate 320 is formed of a plurality of spaced apart from each other in a disc shape on the outer periphery of the heat dissipation tube 310.

The heat dissipation plate 320 increases the area in contact with the air to receive the heat generated from the heat dissipation tube 310 to better dissipate to the outside.

Unlike the present embodiment, the heat dissipation tube 310 may be formed in an I-shape, and the heat dissipation plate 320 may be mounted on the outer circumference thereof. And by extending the length of the heat dissipation tube 310 to change the current into heat by mounting the disk-shaped heat sink 320, so that a large amount of heat can be dissipated in a short time to the current of the rechargeable battery (B) It is desirable to discharge quickly.

The selection switch 330 is shown in FIG. As shown, the discharge resistor 300 is turned on / off.

At this time, the discharge resistor 300 is made of a plurality, the discharge resistor 300 made of a plurality each has a different resistance value.

That is, the selection switch 330 is installed on each of the plurality of discharge resistors 300 to turn on / off each of the discharge resistors 300 selectively.

This is because the selection switch 330 turns on the discharge resistor unit 300 having different resistance values according to the current value of the rechargeable battery B connected to the connection terminal unit 200, that is, the discharge resistor Too much heat is generated in the unit 300 to prevent the discharge resistor unit 300 from being damaged by heat, and the resistance of the discharge resistor unit 300 is too large to prevent electric current from being discharged. It is for forcibly discharging the current of B).

As shown in FIG. 2, the voltage measuring unit 400 measures the voltage of the rechargeable battery B connected to the connection terminal 200.

The voltage measuring unit 400 is operated by an external power source.

And the voltage value measured by the voltage measuring unit 400 is displayed through the liquid crystal unit 120 provided in the front of the main body 100 as shown in Figure 3 and 4 to inform the user.

As shown in FIG. 2, the current measuring unit 500 measures the current of the rechargeable battery B connected to the connection terminal 200.

The current measuring unit 500 is operated by an external power source.

And the current value measured by the current measuring unit 500 is displayed through the liquid crystal unit 120 provided in the front of the main body 100 as shown in Figure 3 and 4 to inform the user.

The current measuring unit 500 is converted to heat through the discharge resistor 300 to measure the amount of current remaining after the discharge.

This is to turn on / off the external power by the measured current value as shown in FIG. 2 and to select the discharge resistor unit 300 to have an appropriate resistance value by the selection switch 330.

As shown in FIG. 2, the magnetic contactor 600 connects or blocks the connection terminal part 200 and the discharge resistance part 300.

The structure of the electromagnetic contactor 600 (Electro Magnetic Contactor) refers to the opening and closing of the electric circuit to the electromagnet as known.

The magnetic contactor 600 is operated by the external power source (P).

That is, when an external power source P is applied to the magnetic contactor 600, the connection terminal 200 and the discharge resistance unit 300 are connected to each other to receive the current of the rechargeable battery B connected to the connection terminal 200. Forced discharge by flowing to the discharge resistor 300.

When the external power source P is not applied to the magnetic contactor 600, the connection between the connection terminal part 200 and the discharge resistance part 300 is cut off, thereby preventing the connection of the rechargeable battery B connected to the connection terminal part 200. The current flows to the discharge resistor unit 300 so as not to be discharged.

Therefore, the magnetic contactor 600 connects the connection terminal unit 200 and the discharge resistor unit 300 only when the user applies an external power source P to force discharge of the current of the rechargeable battery B. do.

As illustrated in FIG. 2, the first switch 710 turns on / off the voltage measuring unit 400 and the magnetic contactor 600 by an external power source P. FIG.

The first switch 710 is mounted to the front of the main body 100 so that the user is easy to operate, as shown in FIGS.

As illustrated in FIG. 2, the second switch 720 turns on / off the current measuring unit 500 by an external power source P. FIG.

The second switch 720 is mounted on the front of the main body 100 so as to be easily operated by the user, as shown in FIGS. 3 and 4.

As described above, an external power P is applied to the voltage measuring unit 400, the magnetic contactor 600, and the current measuring unit 500 by the first switch 710 and the second switch 720. By operating, the voltage and the current of the rechargeable battery B connected to the connection terminal unit 200 can be measured.

As shown in FIG. 2, the start switch 730 turns on / off the magnetic contactor 600 when the first switch 710 is turned on.

In this case, turning on / off the start switch 730 to operate the magnetic contactor 600 while the first switch 710 is turned on causes the voltage measuring unit 400 and the current measuring unit 500 to operate. After applying the external power (P) to operate first, the start switch 730 of the rechargeable battery (B) connected to the connection terminal portion 200 and the connection terminal unit 200 and the discharge resistor 300 To measure voltage and current values.

The start switch 730 is mounted on the front of the main body 100 so as to be easy for the user to operate as shown in FIGS. 3 and 4.

The cooling fan 800 is mounted to the main body 100 on the rear side of the discharge resistor 300 as shown in FIG.

The cooling fan 800 cools heat by causing wind to blow on the heat dissipation tube 310 and the heat dissipation plate 320.

The cooling fan 800 is operated by an external power source P as shown in FIG. 2, and is turned on / off by the first switch 710.

That is, the cooling fan 800 is operated when the first switch 710 is on.

In this case, the plurality of discharge resistor unit 300 is viewed from above, as shown in Figure 6, the virtual line (L) connected to both ends of the heat dissipation tube 310 is generated by the cooling fan 800 It is arranged to be inclined with respect to the wind direction of movement.

This is to blow the wind evenly to the front and rear ends of the heat dissipation tube 310 formed in a U-shaped to better cool.

If the front and rear ends of the heat dissipation tube 310 formed in a U shape are positioned to match the direction of movement of the wind, the wind blown from the cooling fan 800 may contact only the rear end of the heat dissipation tube 310. The heat generated at the shear will not cool well.

In addition, when a plurality of front and rear ends of the heat dissipation tube 310 formed in a U shape are disposed in a vertical direction in a wind moving direction, the heat dissipation tube 310 in which the wind blowing from the cooling fan 800 is located at the front is placed. In another heat dissipation tube 310 positioned in contact with only the rear of the wind), the wind is not well contacted, so that the heat is not cooled well.

 In this embodiment, the imaginary line connecting both ends of the heat dissipation tube 310 is inclined with respect to the movement direction of the wind so that the front and rear ends of the heat dissipation tube 310 are blown by the cooling fan 800. The coming wind is in contact so that the heat generated in both the front end and the rear end of the heat dissipation tube 310 is better cooled by the wind.

The timer 900 informs the user in advance of the time until discharge of the rechargeable battery B connected to the connection terminal unit 200.

As shown in FIG. 2, the timer 900 is operated by receiving an external power source P by an operation of the second switch 720.

The timer 900 includes a controller (not shown), a display unit 910, and an alarm 920.

The controller (not shown) calculates a discharge time of the rechargeable battery B connected to the connection terminal unit 200 based on the measured current value connected to the current measuring unit 500.

That is, the control unit discharges until the current remaining in the rechargeable battery B is discharged with respect to the current value remaining in the rechargeable battery B and the resistance value of the discharge resistor 300 connected by the selection switch 330. The time to be taken, that is, the time required, is calculated in advance.

The display unit 910 displays the time until the rechargeable battery B is discharged based on the value calculated by the controller.

For example, when the controller is discharged in the rechargeable battery B for 5 minutes by the current value measured by the current measuring unit 500, the controller 910 displays the time on the display unit 910 and reverses the time. Indicate the time until the remaining discharge.

The display unit 910 is mounted on the front of the main body 100 as shown in Figures 3 and 4 so that the user can easily see.

The alarm 920 notifies the user of the discharge of the rechargeable battery B by displaying it externally.

The alarm 920 is controlled by the control unit when the current value measured by the current measuring unit 500 reaches a predetermined predetermined value, and informs the user of it by sound.

The display unit 910 is mounted on the front of the main body 100 as shown in Figures 3 and 4 to inform the completion of the discharge by sound.

In the present exemplary embodiment, the alarm 920 is notified by sound, but unlike the present exemplary embodiment, the alarm 920 may be notified to the outside through a lamp.

In addition, the external power P may be blocked together with the alarm 920 to prevent the discharge of the current remaining in the rechargeable battery B from being forcibly discharged.

That is, the rechargeable battery B maintains the lowest current value and voltage value that can be recharged again to prevent the rechargeable battery B from being discharged and no longer charged.

The operation process of the rechargeable battery forced discharge device of the present invention having such a configuration will be described in detail.

First, the rechargeable battery B to be discharged is connected to the connection terminal part 200 in accordance with a + pole (anode) and a-pole (cathode).

After connecting in this way, when the first switch 710 is turned on, the external power P is applied to the voltage measuring unit 400 to prepare to measure the voltage of the rechargeable battery B.

At this time, since the connection terminal part 200 and the discharge resistance part 300 are not connected by the magnetic contactor 600, the voltage value measured by the voltage measuring part 400 becomes zero.

In addition, the cooling fan 800 operated by the first switch 710 rotates to generate wind to be blown by the discharge resistor unit 300.

Then, when the second switch 720 is turned on, an external power source P is applied to the current measuring unit 500 to prepare the current of the rechargeable battery B.

In this case, since the connection terminal part 200 and the discharge resistance part 300 are not connected by the magnetic contactor 600, the current value measured by the current measuring part 500 becomes zero.

In addition, although the external power P is applied to the timer 900, the timer 900 is not operated because the current value measured by the current measuring unit 500 is zero.

Thereafter, when the start switch 730 is turned on, the external terminal P is applied to the magnetic contactor 600, and the connection terminal part 200 and the discharge resistance part 300 are connected to each other.

As such, the connection terminal part 200 and the discharge resistance part 300 are connected so that a current remaining in the rechargeable battery B flows.

In addition, the voltage measuring unit 400 measures the voltage of the rechargeable battery B and displays the operator so that the operator can know through the liquid crystal unit 120 as shown in FIGS. 3 and 4.

In addition, the current measurement unit 500 measures the amount of current remaining through the discharge resistance unit 300 and displays the operator so that the operator can know through the liquid crystal unit 120.

At this time, the control unit calculates the discharge time of the rechargeable battery B by the current value measured by the current measuring unit 500.

The remaining time until the rechargeable battery B is discharged by the calculated value is displayed on the display unit 910.

In this case, the plurality of discharge resistance unit 300 is a voltage value measured by operating the selection switch 330 by the voltage value and the current value measured by the current measuring unit 500 and the voltage measuring unit 400. Select the resistor that is suitable for the overcurrent value and operate it.

When the selection switch 330 selects the plurality of discharge resistor units 300, the control unit may again change the current value of the selected discharge resistor unit 300 based on the measured value measured by the current measurement unit 500. The remaining time until the rechargeable battery B is discharged through the display unit 910 is displayed.

After this is set, the current remaining in the rechargeable battery B is converted into heat while flowing to the heat dissipation tube 310 of the discharge resistor 300 selected by the selection switch 330, and the converted heat is converted into heat and air. Is radiated to the heat sink 320 to increase the contact area of the radiate to the outside.

In addition, the external power P is rotated by the cooling fan 800 by the first switch 710 to generate wind to be blown to the discharge resistor 300.

At this time, the imaginary line connecting both ends of the U-shaped heat dissipation tube 310 is inclined in the wind moving direction, and the wind contacts the front and rear ends of the U-shaped heat dissipation tube 310 more efficiently. It will dissipate heat.

As the current of the rechargeable battery B is discharged as described above, when the remaining time of the display unit 910 becomes 0, the alarm 920 notifies the operator of the discharge completion state.

In this case, when the current value measured by the current measuring unit 500 reaches a predetermined value, the alarm 920 controls the alarm 920 to be displayed to the outside.

After the operator recognizes the discharge completion by the alarm 920, the operator turns off the first switch 710, the second switch 720, and the start switch 730, and charges the battery in the connection terminal unit 200. Disconnect B) and recharge it by connecting to charger.

At this time, the rechargeable battery B has a minimum value of voltage and current for recharging, that is, when a predetermined value is reached, the rechargeable battery B can be recharged and used efficiently since the control is completed.

The rechargeable battery forced discharge device of the present invention is not limited to the above-described embodiment, and may be variously modified and implemented within the range in which the technical idea of the present invention is permitted.

100: main body 110: through hole 120: liquid crystal part
200: connection terminal 300: discharge resistor 310: heat dissipation tube
320: heat sink 330: selection switch 400: voltage measurement unit
500: current measuring unit 600: magnetic contactor 710: first switch
720: second switch 730: start switch 800: cooling fan
900: timer 910: display unit 920: alarm
B: Rechargeable Battery P: External Power

Claims (5)

A body;
A connection terminal unit mounted to the main body and connected to an external rechargeable battery;
A discharge resistor unit configured to discharge current by converting a current of the rechargeable battery connected to the connection terminal unit into heat;
A voltage measuring unit measuring a voltage of the rechargeable battery connected to the connection terminal unit;
A current measuring unit supplied from the rechargeable battery and measuring a current remaining after being discharged from the discharge resistor unit;
Electromagnetic contactor for connecting or disconnecting the connection terminal unit and the discharge resistor unit Magnetic Contactor);
A first switch to turn on / off the voltage measuring unit and the magnetic contactor by an external power source;
A second switch to turn on / off the current measuring unit by an external power source;
A start switch to turn on / off the magnetic contactor when the first switch is turned on; Lt; / RTI >
When the first switch and the start switch are in the on state, the magnetic contactor is connected to the connection terminal portion and the discharge resistor, the current remaining in the rechargeable battery flows to the discharge resistor forcibly discharge the rechargeable battery, characterized in that Device. The method according to claim 1,
The discharge resistor unit,
A heat dissipation tube formed in a U shape;
A plurality of heat sinks formed in a disc shape on an outer circumference of the heat sink; Lt; / RTI >
The heat sink is a forced discharge device of the rechargeable battery, characterized in that for discharging the current of the rechargeable battery converted into heat to the outside. The method according to claim 1 or 2,
The discharge resistance portion is made of a plurality,
A selection switch to turn on / off each of the discharge resistors selectively; Rechargeable battery discharge device characterized in that it further comprises. The method according to claim 2,
The heat dissipation tube at the rear of the discharge resistor And a cooling fan cooling the heat sink. Further comprising:
The cooling fan is operated while the first switch and the start switch are turned on,
As viewed from above, the U-shaped heat dissipation tube is a forced discharge device of the rechargeable battery, characterized in that the imaginary line connecting both ends is disposed inclined with respect to the direction of the wind by the cooling fan. The method according to claim 1,
A timer operating when the second switch is turned on; Further comprising:
The timer,
A control unit calculating a discharge time of the rechargeable battery based on the current value measured by the current measuring unit;
A display unit which displays a time remaining until the rechargeable battery is discharged by a value calculated by the controller;
When the discharge of the rechargeable battery is completed, an alarm to display it to the outside;
The control unit is a preset current value measured by the current measuring unit When the predetermined value is reached, the rechargeable battery forced discharge device, characterized in that to display the outside by controlling the alarm.

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